Gestionnaire can invite an email contact to participate at a dossier

spec/models/invite_spec.rb

@@ -0,0 +1,38 @@
+require 'spec_helper'
+
+describe Invite do
+  describe 'database columns' do
+    it { is_expected.to have_db_column(:email) }
+  end
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:dossier) }
+    it { is_expected.to belong_to(:user) }
+  end
+
+  describe 'an email can be used for multiple dossier' do
+    let(:email1) { 'plop@octo.com' }
+
+    let!(:dossier1) { create(:dossier) }
+    let!(:dossier2) { create(:dossier) }
+
+    context 'when an email is invite on two dossier' do
+      subject do
+        create(:invite, email: email1, dossier: dossier1)
+        create(:invite, email: email1, dossier: dossier2)
+      end
+
+      it { expect{ subject }.to change(Invite, :count).by(2) }
+    end
+
+    context 'when an email is invite twice on a dossier' do
+      subject do
+        create(:invite, email: email1, dossier: dossier1)
+        create(:invite, email: email1, dossier: dossier1)
+      end
+
+      it { expect{ subject }.to raise_error ActiveRecord::RecordInvalid }
+
+    end
+  end
+end